NASA'S Hubble Space Telescope Finds Dead Stars 'Polluted' With Planet Debris

NASA'S Hubble Space Telescope Finds Dead Stars 'Polluted' With Planet Debris

05/09/2013 12:00 AM EDT

NASA's Hubble Space Telescope has found the building blocks for Earth-sized planets in an unlikely place-- the atmospheres of a pair of burned-out stars called white dwarfs.